Heating apparatus



Aug. 3, 1937. w. GILROY HEA/TING APPARATUS Filed March 18, 1956 2 Sheets-Sheet l Irre/rl Aug. 3, 1937. w. GlLRoY HEATING APPARATUS Filed latch 18, 1956- 2 Sheets-Sheetv 2 www Patented Aug. 3, 1937 UNlTED STATES PATENT oFFicE 5 Claims.

This invention relates to heating apparatus and particularly to a steam generator or liquid heater to be used in an oil or` gas burning heater, particularly oneof the home heating type which has been changed from the coal burning type to oil or gas burning type.

Where a change of the above type is made, it generally happens that the construction of the boiler is such that while the heating surfaces are properly designed when coal or other solid fuel is used, they are generally relatively inefficient when oil or gas is used as the fuel. In accordance with the present invention there is provided an auxiliary element designed to be lo- 15- catedin the fire-box and to receive water from the boiler or heater or, alternatively, from the return connections prior to entrance of the water into the boiler. The invention is applicable to the hot water type of heating system as well as steam or Vapor heating systems. For convenience, however, instead of referring to the alternatives, reference will be made to the auxiliary device as a steam generator and in general to a steam heating system, though it will be understood that a hot water or vapor heating system may be involved instead. The invention is also applicable to other than household or building heating systems and may be used for the generation or moderate amounts of steam or hot water for other purposes..

The device is` so arranged as to make the maX- imum use of the heating powers oi the products of combustionand to this extent is designed not only to present a maximum surface to the products of combustion but also to present a maximum surface with which the liquid to be heated or boiled may Contact to secure rapid and efficient heat transfer.

Besides the general objects. above, other objects of the invention relate primarily to details oi construction and will become apparent from the following description read in conjunction with the accompanying drawings, in which:

Fig. l is a diagrammatic elevation partly in section showing a boiler and connections thereto withY which the improved device is associated;

Fig. 2 is a similar View showing a modified arrangement oi the improved device in connection with a boiler;

Fig. 3 is a vertical section through the device;

Fig. 4 is a horizontal section taken on the plane indicated at ll-l in Fig. 3; and

Fig. 5 is a horizontal section taken on the plane indicated at 5 5 in Fig. 3.

Referring first to the device, which will be referred to as a steam generator with the understanding indicated above of its broader application, this steam generator is illustrated in detail in Figs. 3, 4 and 5. It comprises a lower liquid inlet chamber 2 which is of generally symmetrical form and which is provided with a tapped inlet opening 4 and a tappedA outlet opening 6. Horizontal bafes 8 and I0 are arranged transversely `of the chamber 2I and are provided with openings l2 and I4 which are misaligned, as indicated in Fig. 3, so that the liquid flowing upwardly through the chamber has imparted to it a zigzag course prior to reaching the opening 6. A sediment clean-out plug I6 may be provided in the bottom of this chamber.

The chamber 2 is connected through a pipe nipple I8 tapped into the opening 6 with an intermediate chamber 2.2which is provided with a tapped opening 26 receiving the nipple. The chamber 22 is of the form indicated in Figs. 3

and 4 and is provided with a cavity indicated at` 24V through which the products of combustion may circulatev upwardly for engagement with the upper chamber. This intermediate chamber is also provided with a vertical opening 26 to additionally provide for circulation oi the products of combustion. and contains bailies 28 which prevent direct passage of the liquid from the entrance opening 20 to the exit opening 30.

A pipe nipplel 32 is tapped into the opening 30 and also into an opening 34 of the upper chamber 36. This chamber, which is illustrated in Figs. 3 and 5, is provided with a dished under surface adapted to entrap the products of combustion and produce a turbulence to promote circulation about the intermediate chamber 22.

This upper chamber is provided with baffles 38` and 40 arranged as indicated in Fig. 5, which provide a devious course for the liquid from the entrance opening 34 to the exit opening 42'. An alternative exit opening 44 may be provided for convenience in making connections, though in the arrangements indicated this latter opening is plugged, the exit of liquid being from the opening 42'.

When the arrangement just described is located within a boiler i6 as indicated in Figs. 1 and 2, above an oil or gas burner indicated at 48, it will be obvious that the products of combustion will flow up about the lower chamber 2 and thence about the intermediate chamber through the concavity 24 and the opening 26 to impinge upon the concave lower face of the upper chamber 36. From about this upper chamber the n "30 desirable.

2 j Q 2,088,647 Y Y V1. Apparatus for the heating of liquid designed Aproducts will pass in contact with the conven-f tional heating surfaces of the boiler indicated in Fig. l and thence Yto the flue.V

The steam outlet of the boiler isindicated at 50,V while the return water connection is indicated at .52. The return occurs into the water jacket 54 of the fire-box, which extends downwardly -from the dome 56. Referring first to Fig. 1, there is shown therein one arrangement for connecting the generator into the boiler, this arrangement being particularlyY adapted for the generation of steam. The

Vlowerchamber 2 is connected, through a pipe 58,1` secured in the walls of the boiler and connecting.

15 pipe 60, with the return connection 52.

outlet of the upper chamber 36 is connected by j The ' the upper end of the separator 64 provides com-Y munication between it and the steam pipeY 50.

12 representsthe return for the water separated in 64 and may be connected,vfor example, to thejunction4 of the pipes 58 and 60. A check valve 'I4 is interposed inthe connectionr12 to prevent the reverse ow of water upwardly there- -V through. Additionally a globe valve 'l6 maybe provided to cutoff this connection when that is 7A, connection 18 may be provided between the pipe 62 and the dome 56 of the boiler, this connection being provided with a valve 80 while the Y pipe 62 is provided withia valve 82 thereabove. Y Assumingthat the valves 16 'and 82 are opened and that the'valverv 8!) is closed, steam and water will pass upwardly through thepipe 62 into the separator, from which the steam will flow through 'l0 to the main steam pipeY 5ll'andV the separated 40 water will return through pipe l2 and check valve 14. If desired,the valve 80 Vmay be open at this time, providing for flow of water and steam into the dome. Alternatively, valves 16 and`82 mayl be closed and valve 80 opened, in which caseY the Y V separator is taken entirely out of the system and the steam and waterfrom the upper chamber` 36 of the generator ow directly into 'the dome.

This arrangement may, of course, be also achievedl by omitting the connections to the separator.

A simple arrangement is indicated in Fig. 2. In this case the lgenerator is connected-'directlyY with the water jacket 54 of the nre-box by means of pipes 84 and 86. In such case the steam generated will flow directly into the Ydome from the jacket.

for Varrangement within the combustion space of a heater comprising a plurality of chambe, means for connecting said chambers to provide a flow of liquid therebetween, means for leading liquid to the chambers, means for providing an exit of liquid fromr the chambers, and baflies Ywithin the chambers for producing a zigzag flow` of liquid therethrough, one of said chambers having a passage for flow of gases therethrough.

2. VApparatus for the-heating of liquid designed for arrangement within the combustion spaceof a -heater comprising a rplurality of chambers, means for connecting said chambers'to provide'aI iiow of liquid therebetween, means for leading liquid to thechambers, means for providing an exit of liquid from the chambers, andrbailles,V

within the chambers for producing a zigzag flow of liquid therethrough, one of said chambers having a concave lower wall to receive upwardly flowing gases. o

V3. Apparatus for the heating of' liquid designed Yfor arrangement within the combustion space of a heater comprising a plurality of chambers, means for connecting said chambers to provide a flow of liquid therebetween, means for leading Vliquid to the chambers, means for providing an exit Yof f liquid from the chambers, and bailles within thev chambers for producing a zigzag ow of liquid therethrough, one of said chambers having a passage for flowof gases therethrough, and

another chamber being arrangedk above the last named lchamber and being provided with a concave lower wall to receive upwardly flowing gases.

4. Apparatus for the heating of liquid designed Vfor. arrangementwithin the combustion space Y ofra heater comprising al plurality of superimposed chambers, means for connecting said chambers to provide a flow of liquid therebetween,

means for leading liquid to the chambers, and

means for providing an exit to'liquid from the chambers, said chambers including .an intermediate one of crescent shape having a'passage for ilow of gases upwardly therethrough, anda Vchamber above said crescentV shaped chamber provided Vwith a concave lower wall to receive gases flowing upwardly Vthrough the passage in Y the crescent shaped chamber.

5. Apparatus for the heating of liquid designed for arrangement within theY combustion space of a heater comprising a plurality of superimposed chambers, means Yfor connecting said chambers to provide a ilow of liquid therebetween, means for leading 'liquid to the chambers, and means for providing an exit to liquid from the chambers, said chambers including an intermediate one of crescent shape having a passagefor flow of gases upwardly therethrough, and a chamber above said crescent shaped chamber provided with a concave lower wall to receive gases flowing upwardly through the passage in the crescent shaped chamber, said chambers being provided with interior baifles producing a zigzag iiow of liquid therethrough.

WALTER GILROY. 

